181123425402 has 64 divisors (see below), whose sum is σ = 389333081088. Its totient is φ = 56067264000.

The previous prime is 181123425389. The next prime is 181123425421. The reversal of 181123425402 is 204524321181.

181123425402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270508 + ... + 659864.

It is an arithmetic number, because the mean of its divisors is an integer number (6083329392).

Almost surely, 2^181123425402 is an apocalyptic number.

181123425402 is an abundant number, since it is smaller than the sum of its proper divisors (208209655686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181123425402 is a wasteful number, since it uses less digits than its factorization.

181123425402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389495.

The product of its (nonzero) digits is 15360, while the sum is 33.

Adding to 181123425402 its reverse (204524321181), we get a palindrome (385647746583).

The spelling of 181123425402 in words is "one hundred eighty-one billion, one hundred twenty-three million, four hundred twenty-five thousand, four hundred two".